NAME    [Toc]    [Back]

     pthread_key_delete -- delete a thread-specific data key

LIBRARY    [Toc]    [Back]

     Reentrant C Library (libc_r, -lc_r)

SYNOPSIS    [Toc]    [Back]

     #include <pthread.h>

     int
     pthread_key_delete(pthread_key_t key);

DESCRIPTION    [Toc]    [Back]

     The pthread_key_delete() function deletes a thread-specific data key previously
 returned by pthread_key_create().	The thread-specific data values
 associated with key need not be NULL at the time that
     pthread_key_delete() is called.  It is the responsibility of the application
 to free any application storage or perform any cleanup actions for
     data structures related to the deleted key or associated thread-specific
     data in any threads; this cleanup can be done either before or after
     pthread_key_delete() is called.  Any attempt to use key following the
     call to pthread_key_delete() results in undefined behavior.

     The pthread_key_delete() function is callable from within destructor
     functions.  Destructor functions are not invoked by pthread_key_delete().
     Any destructor function that may have been associated with key will no
     longer be called upon thread exit.

RETURN VALUES    [Toc]    [Back]

     If successful, the pthread_key_delete() function will return zero.  Otherwise
 an error number will be returned to indicate the error.

ERRORS    [Toc]    [Back]

     The pthread_key_delete() function will fail if:

     [EINVAL]		The key value is invalid.

SEE ALSO    [Toc]    [Back]

     pthread_getspecific(3), pthread_key_create(3), pthread_setspecific(3)

STANDARDS    [Toc]    [Back]

     The pthread_key_delete() function conforms to ISO/IEC 9945-1:1996
     (``POSIX.1'').


FreeBSD 5.2.1			 April 4, 1996			 FreeBSD 5.2.1